Abstract: A dual wheel mount assembly is disclosed which is particularly suited for heavy implements such as agricultural combines or earth moving equipment. Inner and outer wheels of the assembly are interchangeable and formed with circumferentially spaced mounting holes which are alternately of a smaller diameter and a larger diameter. Retaining nuts are threaded only on the mounting bolts in the smaller diameter holes in the inner wheel to operationally secure the same. The outer wheel is mounted so that the larger diameter holes therein fit over the retaining nuts for the inner wheel. Outer retaining nuts are operationally threaded on all of the bolts, including those securing the inner wheel. Removal of the outer wheel thus may be accomplished without affecting the securement of the inner wheel.